Bench-clamp.



.1. CHAMBERS. BENCH CLAMP. APPLICATION FILED MAR. 28, 1998.

Patented Feb. 2, 1909.

- (/fiaizZ/ra I attougugo .use to slide forward, due tothe UNITED STATESPATENT OFFICE.

SAMUEL J, CHAMBER S, OF HASTINGS, NEBRASKA.

BENCH-CLAMP.

Specification ofLeiit'ers Patent.

Pa.tented Feb. 2, 1909.

Application filed March 2a, 1908. a Serial No. 423,937.

To all whom it may concern:

Be it known that I, SAMUEL J. CHAMnERs,

a citizen of the United States, residing at Hastings, in the county ofAdams and State of Nebraska, have invented a new and useful Bench-Clamp,of whichthe following is a specification.

This invention relates to clamping devices, and particularly to thekind. used, by

carpenters and woodworkers for fastening a board or block to a workbench.

One object of this invention is to provide a clamp which will bepositively held against sliding movement when .fastened to a bench. Thisis especially desirable during the operation of sawing or planing, wherethere 1s a tendency with most clamps now in pressure exerted on theobject held by the clamp.

Another objectof this device is to provide a smooth clamping surface,such as will not hlave a (pendency. to deface the material held 0 am e aWith these and other objects in view, as

will more fully hereinafter appear, the invention consists in certainnove struction and'arrangement of parts, heremfeatures of conafter fullydescribed ,illustrated in the accompanying': drawings, and particularlypointed out in theaPPended claim, it being understood that variouschanges in the form, proportions, si'ze'and minor details of thestructure may be made -Without departing from the spirit orsacrificing'any of the advantages of theinvention.

- n the accompanying drawings z-Figure' 1 is-:

Is a perspective view of the device.

, is a side view of the device showing the position of the dparts whenapplied to the ordinary bench; use by carpenters and disclosing themeans for clamping the board'or block.

. ployed .to indicate corresponding EGs tra ddIe' the apron 3 ofa-.Similar numerals 'of' reference are. em-

arts throughout. the several figures of the, rawlymg .in a verticalangles to the tion of which greater length than the 'endthereof isformed a work-holder comprisinto the space between the two posed facesof the top 12'with the table.

.mounte "on the last named arm enlarged headpro'vided with a spuradapted prevent movement of the mem On the innerface of the arms 1 andadjacent the-end thereof are formed The outer-arm 2 of'the device is ofslightly arm v1, and on the mg a base plate 5 of slightly greater widththan the arm 2, the innerv end of which is flush with the inner face ofthe arm 2, and on the outer endof the plate is formed a wall '6extending upwardly at right angles to the base'plate 5. Directly beneaththe work holder onthe arm 2 is formed a perforation for the reception ofa pivot bolt 8 which extends transverse of the arm, and on either endspurs or levers 9, the pivoted ends of which are enlarged and curvedinwardl sufficient to lie approximately flush --wit the inner face-ofthe arm 2 when the levers are on the center. The handle portion of thelevar curves downwardly and outwardly away from the heads for a lengthsufficient to extend beyond the arm 2, and is removably connected by abolt 11. A s ur is formed on that portion of each lever w 'ch lies flushwiththe inner face of the arm 2 and extends arms.- With thisconstr'uction it.is obvious that as the le-.

ver. is raised, thes nr 10 is eccentric with the pivot 8 to be liftefrom the recess, and when the arms '1 and 2 are adjustable on theopapron 3 by forcing the lever downward, the spur 10 enters the spaceand further pressure forces the arms acting on the pivot 8 as'a fulcrum"close together, the s urs 4 and 10 embedding the apron 3 and t e holderclamping the blockand the Whatis claimed is w A clamping deviceembodying a U-shaped member adapted .to straddle-the apron of a bench,table or the like, and having spurs formed on the-inner face of one armthereof, a work holder on one arm having a vertical wall disposed beyondthe vertical dplane of said arm, a lever pivotally toengage the tableor, bench a ron, so as to er. 1 .In testimony that I claim the foregoingas my own, I. have hereto aflixed my signature in the presence of twowitnesses.

SAMUEL J. CHAMBERS.

Witnesses:

.L. M. NELLIs,

W.. R. ALEXANDER.

of said member having an

